org.apache.clerezza.templating.seedsnipe.datastructure

Class DataFieldResolver

java.lang.Object

org.apache.clerezza.templating.seedsnipe.datastructure.DataFieldResolver

Direct Known Subclasses:

GraphNodeDataFieldResolver

public abstract class DataFieldResolver
extends Object

Used by DefaultParser to resolve data fields.

Author:

reto

Constructor Summary

Constructors

Constructor and Description
DataFieldResolver()

Method Summary

Methods

Modifier and Type	Method and Description
String	resolve(String fieldName, int[] arrayPos) invokes resolveAsObject and transforms its result to a String
abstract Object	resolveAsObject(String fieldName, int[] arrayPos) This method resolves the specified fieldName to its object value, if any level of the fieldName is an array, the corresponding entry in arrayPos is used for resolution.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DataFieldResolver

public DataFieldResolver()

Method Detail

resolveAsObject

public abstract Object resolveAsObject(String fieldName,
                     int[] arrayPos)
                                throws FieldDoesNotHaveDimensionException,
                                       FieldIndexOutOfBoundsException,
                                       InvalidElementException,
                                       IOException

This method resolves the specified fieldName to its object value, if any level of the fieldName is an array, the corresponding entry in arrayPos is used for resolution.

Parameters:

fieldName - name of the data field to resolve.

arrayPos - An array containing array indices (the loop variables) for array fields.

Returns:

The java object the field maps to.

Throws:

FieldDoesNotHaveDimensionException - If arrayPos is longer than the field has dimensions.

FieldIndexOutOfBoundsException - If a value of arrayPos is larger than the number of elements in field.

InvalidElementException - If field-name is invalid.

IOException

resolve

public String resolve(String fieldName,
             int[] arrayPos)
               throws FieldDoesNotHaveDimensionException,
                      FieldIndexOutOfBoundsException,
                      InvalidElementException,
                      IOException

invokes resolveAsObject and transforms its result to a String

Parameters:

fieldName - name of the data field to resolve.

arrayPos - An array containing array indices (the loop variables) for array fields.

Returns:

The string representation (obtained by invoking .toString()) of the resolved object.

Throws:

FieldDoesNotHaveDimensionException - If arrayPos is longer than the field has dimensions.

FieldIndexOutOfBoundsException - If a value of arrayPos is larger than the number of elements in field.

InvalidElementException - If field-name is invalid.

IOException